Ultra fine platinum powder: creating highly reliable and high-resolution conductor paste

In the development of modern technology, ultrafine platinum powder, as an important material, is widely used in the production of conductive pasteTo meet the requirements of high reliability and high resolution. This article will introduce the preparation method of ultrafine platinum powder and its application in conductor slurries.
1、 Characteristics and preparation methods of platinum powder
1. Characteristics
The particle morphology of ultrafine platinum powder is generally spherical and polygonal, with micrometer sized particles. Its tap density is between 1.0g/cm3 and 4.0g/cm3, and the average particle size is between 1.1 μ m and 1.7 μ m. The specific surface area is relatively large, ranging from 5m2/g to 15m2/g. These characteristics make superfine platinum powderIt has good dispersibility and size consistency in the preparation process of conductor paste.
2. Preparation method
The preparation of ultrafine platinum powder mainly involves the following steps:
a. Dissolve sponge platinum in aqua regia to obtain chloroplatinic acid solution.
b. Adjust acidity to meet preparation requirements.
c. Add dispersant and heat stir to promote the dispersion of platinum powder.
d. Add a reducing agent, such as hydrazine hydrate, to carry out a reduction reaction, converting chloroplatinic acid in the solution into ultrafine platinum powder.
e. After settling and cooling, the obtained suspension was washed and dried to obtain ultrafine platinum powder with an average particle size of less than 0.5 μ m.

2、 Application of ultrafine platinum powder in conductor slurry
Ultra fine platinum powder, as a high-quality material, has a wide range of applications in the preparation of conductor slurries. The following are its main application aspects:
1. Single layer or multi-layer hybrid integrated circuit
After adding ultrafine platinum powder to the conductor paste, single-layer or multi-layer hybrid integrated circuits can be prepared. Ultra fine platinum powder has good electrical conductivity and size consistency, which can provide high reliability and high-resolution conductivity effects. This is crucial for improving the performance of modern electronic devices.
2. Varistor
Ultra fine platinum powder can also be used to make varistors. Adding a certain proportion of ultrafine platinum powder to the conductor slurry can improve the sensitivity and stability of the resistor. This has important application value in electronic components.
3. Sensors
Ultra fine platinum powder has a wide range of applications in the preparation of sensors. Due to its large surface area and good dimensional consistency, it can improve the sensitivity and response speed of sensors. By preparing conductor paste and coating it on the sensor base, high-performance sensors can be produced, which are widely used in industrial automation, environmental monitoring and other fields.
Summary: superfine platinum powderAs an advanced material, it is widely used in the preparation of conductor slurries. Its preparation method is simple and efficient, with good dispersibility and size consistency. Adding ultrafine platinum powder to the conductor slurry can meet the requirements of high reliability and high resolution, effectively improving the performance of electronic devices. In the future, with the continuous advancement of science and technology, the application prospects of ultrafine platinum powder in conductor slurries will be even broader.